Doctor Who

Doctor Who is a British science fiction television programme produced by the BBC. The programme depicts the adventures of a mysterious and eccentric Time Lord known as the Doctor who travels through time and space in his time machine, the TARDIS (an acronym for Time And Relative Dimension(s) In Space), which normally appears from the exterior to be a blue 1950s British police box. With his companions, he explores time and space, faces a variety of foes and saves civilizations, helping people and righting wrongs.

Theta Sigma (ΘΣ), the fraternity that Roger joins in "All About Steve", is one of the Doctor's nicknames, significantly noted in the fourth Doctor episode "The Armageddon Factor".

In "Escape from Pearl Bailey", during Debbie's campaign for Student Council President, she refers to a "thirty year old TV show" and the scene cuts to nerds in the audience, wearing costumes based mainly on the fourth and eighth incarnations of the Doctor.

In the head-on view, the top turret of the urban assault vehicle in "Old Stan in the Mountain" resembles a Dalek from Doctor Who.

On an alien ship in "Holy Shit, Jeff's Back!", Hayley and Roger pass a wall of assorted weapons, including sonic screwdrivers from Doctor Who. In another room, Roger passes a Dalek.

Klaus worries that he may have bombed at Dr. Kalgary's wedding reception from making Doctor Who references in "Family Plan".